(723) Hammonia Main-belt Asteroid
Discovered on 21 October 1911 by J. Palisa at Vienna.
Where Hammonia is today
Seen from above the solar system on 2026-10-14: Hammonia is 2.90 au from the Sun and 3.15 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 723 |
| Provisional designation | A911 UO |
| Orbit class | Main-belt Asteroid |
| Diameter | 23.5 km (#1,820 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.352 |
| Rotation period | 5.44 hours |
| Spectral type | C |
| Absolute magnitude (H) | 10.15 |
| Orbital period | 5.18 years |
| Semi-major axis | 2.99 au |
| Perihelion – aphelion | 2.82 – 3.16 au |
| Eccentricity | 0.0567 |
| Inclination | 4.99° |
| Closest distance between its orbit and Earth's (MOID) | 1.84 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 21 October 1911
More named asteroids discovered by J. Palisa
- (136) Austria
- (137) Meliboea
- (140) Siwa
- (142) Polana
- (143) Adria
- (151) Abundantia
- (153) Hilda
- (155) Scylla
- (156) Xanthippe
- (178) Belisana
- (182) Elsa
- (183) Istria
← (722) Frieda · (724) Hapag →